Lammerts van Bueren, E.T.; Wilbois, K-P. and Østergård, H.
(2007)
European perspectives of organic plant breeding and seed production in a genomics era.
[European perspectives of organic plant breeding and seed production in a genomics era.]
Journal of Agriculture and Rural Development in the Tropics and Subtropics, Organic Agriculture in the Tropics and Subtropics – Current Status and Perspectives (Supplement 89), pp. 101-120.

Lorenz, Norbert; Klause, Stefan and Spieß, Hartmut
(2007)
Anbaueignung gegenüber Flug- und Hartbrand (Ustilago nuda, U. hordei) widerstandsfähiger Wintergerste-Handelssorten unter ökologischer Bewirtschaftung.
[Because of the interdiction of chemical seed treatment, smut resistance is a main demand for cultivation of winter barley in organic farming. A comparison of common high yielding varieties with those chosen particularly with regard to good smut-resistance or tolerance showed no significant differences in field performance under the conditions of organic farming. Main criteria were the yield of grain and the content of protein and most important amino acids for animal nutrition (Cystine, Lysine, Me-thionine, Threonine, Tryptophan). Besides this the degree of shading weeds was estimated by means of measuring leaf areas and lengths of stalks. The leaf area proved to be the main factor. The availability of smut resistant or tolerant varieties out of organic production is not satisfying yet.]
Paper at:
Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.